Design of a Small Step and Low Phase Noise Frequency Synthesizer
Jing Li · Journal of China Academy of Electronics and Information Technology · 2009
A kind of frequency synthesizer with characteristics of wideband,small frequency step,high stability and low phase noise,is designed with Comprehensive application of PLL and DDS technologies.Main technical specifications of the frequency synthesizer are as follows: frequency step of 1 Hz,maximum error of frequency control of better than 4.5×10-4 Hz,and phase noise of-100 dBc/Hz@10 kHz.Comparing with the traditional design method consisting of multi-loops,it can better meet stronger integration,low-cost and all-purpose requirements.And this can greatly improve efficiency of circuit debugging.